he accompanying data were read from graphs that appeared in an article. The variables shown are the number of acres burned in forest fires in the western United States and timber sales. (NOTE: the data is the image) (a) Compute the correlation coefficient. (Give the answer to three decimal places.) r=? Is there a correlation between timber sales and acres burned in forest fires? CORRECT: weak positive correlation (b) The article concludes that "heavier logging led to large forest fires." Do you think this conclusion is justified based on the given data?
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
The accompanying data were read from graphs that appeared in an article. The variables shown are the number of acres burned in forest fires in the western United States and timber sales.
(NOTE: the data is the image)
(a) Compute the
r=?
Is there a correlation between timber sales and acres burned in forest fires?
CORRECT: weak
(b) The article concludes that "heavier logging led to large forest fires." Do you think this conclusion is justified based on the given data?
CORRECT: no
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